Home / 20,856.03-28,774.28-11,897.23

Finding the Fourth Proportional to 20,856.03, 28,774.28 and 11,897.23

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Solution

The fourth proportional to 20,856.03, 28,774.28 and 11,897.23 is: 16,414.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.03 : 28,774.28 = 11,897.23 : x
  2. Step 2: Convert to fraction form
    20,856.03/28,774.28 = 11,897.23/x
  3. Step 3: Cross multiply
    20,856.03x = 28,774.28 × 11,897.23
  4. Step 4: Simplify right side
    20,856.03x = 342,334,125.57
  5. Step 5: Solve for x
    x = 342,334,125.57/20,856.03
  6. Step 6: Final answer
    x = 16,414.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.